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Finding the Fourth Proportional to 8,471.50, 11,692.13 and 4,885.81

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Solution

The fourth proportional to 8,471.50, 11,692.13 and 4,885.81 is: 6,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.50 : 11,692.13 = 4,885.81 : x
  2. Step 2: Convert to fraction form
    8,471.50/11,692.13 = 4,885.81/x
  3. Step 3: Cross multiply
    8,471.50x = 11,692.13 × 4,885.81
  4. Step 4: Simplify right side
    8,471.50x = 57,125,525.68
  5. Step 5: Solve for x
    x = 57,125,525.68/8,471.50
  6. Step 6: Final answer
    x = 6,743.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.